Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
thieu trac » thi trac, thieu cac, thieu tai
hoc nhanh » hoc nganh, hoc phan
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan dan » phan dau, gian dan
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
mo hoc » mon hoc, co hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thieu trac, nghien cuu mo hoc nhanh khong thuoc xa hoi va ((nhan dan) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thieu trac, nghien cuu mo hoc nhanh khong thuoc xa hoi va ((nhan dan) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: tu sach thieu trac, nghien cuu mo hoc nhanh khong thuoc xa hoi va ((nhan dan) OR (nhan tai))*.